The file system can be mounted from the device if it is valid and it
is recognized.

If it fails to mount, stop vold.

# svcadm disable volfs

If the file system on the device is not automatically mounted, try a
manual mount.

Before hot-removing the device, find the name of the device in the eject-l command's alias name. Then eject the device's
media. If you don't do this, the device is released and the port is usable
again, but the file system on the device might have been damaged.

When you hot-plug a USB device, the device is immediately seen in the
system's device hierarchy, as displayed in the prtconf command
output. When you remove a USB device, the device is removed from the system's
device hierarchy, unless you are using the device.

If you are using a device when it is unplugged, the device node remains,
but the driver controlling this device stops all activity on the device. Any
new I/O activity issued to this device returns an error.

In this situation, the system prompts you to plug
in the original device. If the device is no longer available, stop the applications.
After a few seconds, the port becomes available again.

Note –

Data integrity might be impaired if you remove an active or open
device. Always close the device before removing, except the attached keyboard
and mouse, which can be moved while active.

How to Add a USB Camera

If the camera's media uses a PCFS file system, it will be automatically
mounted. If the device does not bind to the scsa2usb driver,
use libusb applications for transferring the pictures.
For more information, refer to /usr/sfw/share/doc/libusb/libusb.txt.

Become superuser.

Plug in and turn on the USB camera.

The system creates a logical device for the camera.
After the camera is plugged in, output is written to the /var/adm/messages file to acknowledge the device's connection. The system treats
the camera as a storage device.

Examine the output that is written to the /var/adm/messages file.

# more /var/adm/messages

Examining this output enables you to determine which logical device
was created so that you can then use that device to access your images. The
output looks similar to the following: